Abstract
An investigation is described in which the quality of scoured wools was assessed by their residual-grease and dirt contents, colour, and mean fibre lengths. Two types of wool were scoured in two sets of experiments with varying jetting pressures, detergent–builder concentrations, liquor temperatures, and contaminant concentrations in the liquors. One of these types of wool was scoured conventionally as a control measure. It was found that the dinginess of the scoured wool depended solely on its residual-grease content, which could be kept at a low level by suitable additions of detergent to the scour liquors. The fibres in the slivers of conventionally scoured wool were shorter than, and had the same colour characteristics as, those of a similar wool that had been scoured in the aqueous compression-jet scour.
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